Method sub

src/core/impl/tensor.cpp:242–259

template <class Trait>
TensorStorage<Trait> TensorStorage<Trait>::sub(ptrdiff_t offset) const {
    ptr();  // apply lazy resize
    ptrdiff_t toff = offset + m_offset;
    if (offset == static_cast<ptrdiff_t>(m_size)) {
        return {false, m_comp_node, 0, 0, 0, RawStorage{}};
    }
    mgb_assert(
            toff >= 0 && offset < static_cast<ptrdiff_t>(m_size),
            "bad subtensor: offset=%td m_offset=%zu m_size=%zu", offset, m_offset,
            m_size);
    return {false,
            m_comp_node,
            m_size - offset,
            m_capacity - offset,
            static_cast<size_t>(toff),
            m_data,
            m_ref_ptr};
}

template <class Trait>
dt_byte* TensorStorage<Trait>::apply_lazy_and_get_ptr() {